DiagramDesigner/diagramCavas/source/diagramEditor/diagramEditorPreviewDlg.cpp

#include "diagramEditor/diagramEditorPreviewDlg.h"
#include "diagramEditor/editView.h"
#include "diagramEditor/editScene.h"
#include "graphicsDataModel/diagramEditorModel.h"
#include "diagramEditor/editPanel.h"
#include <QGuiApplication>
#include <QScreen>

DiagramEditorPreviewDlg::DiagramEditorPreviewDlg(QWidget *parent)
    : QDialog(parent)
    ,_pView(nullptr)
    ,_pScene(nullptr)
    ,_pMainLayout(nullptr)
    ,_pParent(nullptr)
{
    setWindowTitle("预览");
    auto pParent = dynamic_cast<EditPanel*>(parent);
    if(pParent)
        setParent(pParent);
    QRect recParent = parent->geometry();
    setGeometry(recParent.right(),recParent.y(),recParent.width(),recParent.height());
    initial();
}

DiagramEditorPreviewDlg::~DiagramEditorPreviewDlg()
{

}

void DiagramEditorPreviewDlg::initial()
{
    _pMainLayout = new QVBoxLayout(this);
    _pView = new EditView(this);
    _pView->scale(0.5, 0.5);
    _pMainLayout->addWidget(_pView);
    _pScene = new EditPreviewScene(this);
    _pScene->setSceneRect(_pParent->getScene()->sceneRect());       //使用父窗口scene大小
    _pView->setScene(_pScene);
    _pView->centerOn(QPointF(0,0));
}

void DiagramEditorPreviewDlg::showDlg()
{
    if(_pParent){
        _pScene->clear();
        _pParent->getModel()->setCurPreviewScene(_pScene);
    }

    show();
    // 设置大小为屏幕的1/3
    QScreen *screen = QGuiApplication::primaryScreen();
    QRect rec = screen->availableGeometry();
    int w = rec.width() / 3;
    int h = rec.height() / 3;
    // 确保最小尺寸
    w = qMax(w, 400);
    h = qMax(h, 300);
    resize(w, h);

    QRect mainRect = screen->availableGeometry();
    int x = mainRect.right() - width();
    int y = mainRect.bottom() - height();
    move(x, y);
}